@article{SM_1974_23_3_a8,
     author = {M. A. Shtan'ko},
     title = {Approximation of imbeddings of manifolds in codimension one},
     journal = {Sbornik. Mathematics},
     pages = {456--466},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_23_3_a8/}
}